How to check Let's Encrypt ssl certificate expiration date?

David Beroff

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I guess Let's Encrypt ssl certificate using for my site will be expired soon but I don't know exactly when it is expire, since I register ssl with Let's Encrypt, it noticed me for 3 months. Can you guys tell me how to check Let's Encrypt ssl certificate expiration date? any tools or commands to check this via SSH?
 

dnsme

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I guess Let's Encrypt ssl certificate using for my site will be expired soon but I don't know exactly when it is expire, since I register ssl with Let's Encrypt, it noticed me for 3 months. Can you guys tell me how to check Let's Encrypt ssl certificate expiration date? any tools or commands to check this via SSH?
If you use cPanel or DirectAdmin (module Let's Encrypt). Will be automatically renewed.

Security testing. Compatible with all browsers. The layering of cert and displaying an expiration date:
https://www.ssllabs.com/ssltest/
 

techman

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I would do it easily myself (applies to all SSL certificates - not only to Let's Encrypt ones):
  • Open a web browser (Mozilla or Opera, cause it's not as easy in Chrome's newest releases);
  • Click on the green lock icon at the left side of address bar;
  • When using Mozilla Firefox, click on the right arrow from the popup;
  • Click on 'more information' on the popup;
  • From the new popup (which contains page information; assuming you're on the 'Security' section), click on 'View Certificate';
  • On the last popup you'll get, look at 'Period of Validity' section;
  • From there you can see when does the cert begin and when it expires.

There are also online services that provide your certificate details, I'd recommend SSL Checker since it's the easiest and fastest way to find out when your SSL certificate expires. :smart:
 
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